Dry-shaving apparatus comprising a slidable shutter

Abstract

In a dry-shaving apparatus comprising a slidable shutter (3) for optionally covering or exposing a shear foil (9) of the dry-shaving apparatus, which shear foil is mounted in a shaving-head frame which is detachably secured to a basic apparatus (1) of the dry shaver, said shutter having a first latched position which is locked by a latching means (12, 13, 14, 15) and in which the circuit of the motor for driving the dry-shaving apparatus is closed by the shutter when the shutter exposes the shear foil to allow shaving, the shutter can be slid away from the shear foil completely onto the basic apparatus, the shutter having a further latched position in which it is locked by means of a latch (12, 13, 23, 24) and in which the shear foil and the shaving-head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter.

What is claimed is: 
     
       1. A dry-shaving apparatus comprising a shaving-head frame which is detachably secured to a basic apparatus and which carries a shear foil, a slidable shutter for optionally covering or exposing the shear foil of the dry-shaving apparatus which shutter is laterally guided by guide means in the shaving apparatus and can be slid from the shear foil completely onto the basic apparatus and locked by first and second latch means, respectively, into a first latched position in which the circuit of the motor for driving the dry-shaving apparatus is closed when said shutter is slid away from the shear foil to expose said shear foil to allow shaving, and into a further latched position in which the shear foil and the shaving head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter. 
     
     
       2. A dry-shaving apparatus as claimed in claim 1, wherein the further latched position of the shutter, in which position the shear foil and the shaving head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter, is situated before first latched position of the shutter in which the shear foil is exposed by the shutter to allow shaving and the motor circuit is closed by means of the shutter. 
     
     
       3. A dry-shaving apparatus comprising a shaving-head frame which is detachably secured to a basic apparatus and which carries a shear foil, a slidable shutter for optionally covering or exposing the shear foil of the dry-shaving apparatus which shutter is laterally guided by guide means in the shaving apparatus and can be slid from the shear foil completely onto the basic apparatus and locked by first and second latch means, respectively, into a first latched position in which the circuit of the motor for driving the dry-shaving apparatus is closed when said shutter is slid away from the shear foil to expose said shear foil to allow shaving, and into a further latched position in which the shear foil and the shaving head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter, wherein the further latched position of the shutter is situated before the first latched position of the shutter, said shutter being provided with a viewing window through which markings indicating the two latched shutter positions and provided on the basic apparatus are visible.   
     
     
       4. A dry-shaving apparatus comprising a shaving-head frame which is detachably secured to a basic apparatus and which carries a shear foil, a slidable shutter for optionally covering or exposing the shear foil of the dry-shaving apparatus which shutter is laterally guided by guide means in the shaving apparatus and can be slid from the shear foil completely onto the basic apparatus and locked by first and second latch means, respectively, into a first latched position in which the circuit of the motor for driving the dry-shaving apparatus is closed when said shutter is slid away from the shear foil to expose said shear foil to allow shaving, and into a further latched position in which the shear foil and the shaving head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter; said shutter being provided with a viewing window through which markings indicating the two latched shutter positions and provided on the basic apparatus are visible. 
     
     
       5. A dry-shaving apparatus comprising a shaving-head frame which is detachably secured to a basic apparatus and which carries a shear foil, a slidable shutter for optionally covering or exposing the shear foil of the dry-shaving apparatus which shutter is laterally guided by guide means in the shaving apparatus and can be slid from the shear foil completely onto the basic apparatus and locked by first and second latch means, respectively, into a first latched position in which the circuit of the motor for driving the dry-shaving apparatus is closed when said shutter is slid away from the shear foil to expose said shear foil to allow shaving, and into a further latched position in which the shear foil and the shaving head frame are exposed by the shutter and the motor circuit is interrupted by means of the shutter, wherein said shutter comprises a gripping element at its end which is remote from the shear foil and which is adapted to latch the shutter and close the motor circuit.   
     
     
       6. A dry shaving apparatus as claimed in claim 5 wherein said gripping element comprises two spaced apart spherical recesses which are adapted to cooperate with balls projecting from the housing. 
     
     
       7. A dry shaving apparatus as claimed in claim 6 wherein said balls are mounted in the housing in a cage closed by a cap, the balls being urged by a spring to project from the housing to engage in recesses in the gripping element to latch the shutter. 
     
     
       8. A dry shaving apparatus as claimed in claim 6 wherein the two positions of the shutter are latched by means of balls which cooperate with spherical recesses in the gripping element.